Merge "bridge: Add bridge API to access the bridge slave port" (e0cb5e90) · Commits · e / devices / android_kernel_fairphone_FP3

include/linux/if_bridge.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -53,6 +53,8 @@ extern void brioctl_set(int (ioctl_hook)(struct net , unsigned int, void __use

		typedef int br_should_route_hook_t(struct sk_buff *skb);
		extern br_should_route_hook_t __rcu *br_should_route_hook;
		extern struct net_device br_port_dev_get(struct net_device dev,
		unsigned char *addr);

		#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
		int br_multicast_list_adjacent(struct net_device *dev,

+31 −0

Original line number	Diff line number	Diff line
		@@ -655,3 +655,34 @@ void br_port_flags_change(struct net_bridge_port *p, unsigned long mask)
		if (mask & BR_AUTO_MASK)
		nbp_update_port_count(br);
		}

		/* br_port_dev_get()
		* Using the given addr, identify the port to which it is reachable,
		* returing a reference to the net device associated with that port.
		*
		* NOTE: Return NULL if given dev is not a bridge or
		* the mac has no associated port
		*/
		struct net_device br_port_dev_get(struct net_device dev, unsigned char *addr)
		{
		struct net_bridge_fdb_entry *fdbe;
		struct net_bridge *br;
		struct net_device *netdev = NULL;

		/* Is this a bridge? */
		if (!(dev->priv_flags & IFF_EBRIDGE))
		return NULL;

		br = netdev_priv(dev);

		/* Lookup the fdb entry and get reference to the port dev */
		rcu_read_lock();
		fdbe = __br_fdb_get(br, addr, 0);
		if (fdbe && fdbe->dst) {
		netdev = fdbe->dst->dev; /* port device */
		dev_hold(netdev);
		}
		rcu_read_unlock();
		return netdev;
		}
		EXPORT_SYMBOL(br_port_dev_get);